Cruisers Forum
Main Forum => General Discussion => Topic started by: LynnWM1894 on September 11, 2021, 01:06:12 pm
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I have a 2020 2552 that I have only driven to storage, house, and to the dealers so everything is new to me. Yesterday I turned both ACs on and left for about 35 minutes. When I returned the furnace was blasting along with the two ACs. What did I do wrong? I have had several motorhomes over the years but this stumps me.
Does anyone have any idea of what I did so that I don't do this again?
Thanks for your help.
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Lynn,
I'll watch this topic with interest and hopefully learn something. I wouldn't think this combination should normally be able to occur.
On my 2019 2552, with 50-amp service and two A/C's, each of the two thermostats can select either Fan, A/C, Furnace, or Heat Pump/Strip. If you had A/C selected on both the front and rear thermostats, and the A/Cs operating, I see no way for the furnace to properly be activated.
I think that I would try to replicate this situation to see under what circumstances you can get it to reoccur-----with the front TT on A/C?, with the rear TT on A/C?, only when both TTs are on A/C? Does the furnace activate normally from each TT on it's own? There could be a wiring issue in the thermostat circuit, I suppose. While anything is possible, I can't think of a more likely fault.
Mike
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I don't know if they still do this or not... In my 2015 (only 1 thermostat and 1 a/c) the wiring from the thermostat (3 wires for mine) run up to the a/c unit. Nothing from the thermostat goes to the furnace, the 12v "brain" of the air conditioner not only controls the air conditioner, but also turns the furnace on/off.
IF the 2920 models are wired the same, then one of the A/C units (most likely the "front" a/c (which works with just 30amp service or generator) is miss-wired on the furnace wires or the controller board is defective.
Definitely sounds like time to get a warranty repair on your PC before it runs out! (or has it run out?).